Encapsulated ultrafine and highly dispersed molybdenum dioxide nanoparticles in hollow mesoporous silica spheres as an efficient epoxidation catalyst for alkenes
Joint Authors
Jiang, Pingping
Shen, Yirui
Wai, Phyu Thin
Zhang, Pingbo
Dong, Yuming
Source
Journal of Saudi Chemical Society
Issue
Vol. 23, Issue 8 (31 Dec. 2019), pp.1157-1167, 11 p.
Publisher
Publication Date
2019-12-31
Country of Publication
Saudi Arabia
No. of Pages
11
Main Subjects
Abstract EN
A facile post-synthetic strategy was developed to functionalize the preformed hollow mesoporous silica spheres by encapsulating the molybdenum dioxide (MoO2) nanoparticles inside the interior cavity.
Hollow mesoporous silica spheres were prepared and employed as carriers, and the encapsulation of MoO2 nanoparticles was achieved through a one-pot hydrothermal protocol.
After characterization, the encapsulated MoO2 nanoparticles were certified to be ultrafine and highly dispersed, which greatly promoted the catalytic activity.
The as-prepared catalysts were utilized in epoxidation of alkenes and exhibited as a promising catalyst in this reaction.
After reacting for 10 h, the optimal catalyst MoO2@SiO2-1 achieved a conversion above 95% and selectivity above 95%, respectively.
Moreover, the catalysts also exhibited good reusability, conversion of 78% and selectivity of 89% (reaction time 4 h) were still obtained after recycling for 5 times.
Meanwhile, the employed facial and efficient hydrothermal approach could be expanded to other molybdenum modified heterogeneous catalysts in various applications.
American Psychological Association (APA)
Shen, Yirui& Jiang, Pingping& Wai, Phyu Thin& Zhang, Pingbo& Dong, Yuming. 2019. Encapsulated ultrafine and highly dispersed molybdenum dioxide nanoparticles in hollow mesoporous silica spheres as an efficient epoxidation catalyst for alkenes. Journal of Saudi Chemical Society،Vol. 23, no. 8, pp.1157-1167.
https://search.emarefa.net/detail/BIM-1443240
Modern Language Association (MLA)
Shen, Yirui…[et al.]. Encapsulated ultrafine and highly dispersed molybdenum dioxide nanoparticles in hollow mesoporous silica spheres as an efficient epoxidation catalyst for alkenes. Journal of Saudi Chemical Society Vol. 23, no. 8 (Dec. 2019), pp.1157-1167.
https://search.emarefa.net/detail/BIM-1443240
American Medical Association (AMA)
Shen, Yirui& Jiang, Pingping& Wai, Phyu Thin& Zhang, Pingbo& Dong, Yuming. Encapsulated ultrafine and highly dispersed molybdenum dioxide nanoparticles in hollow mesoporous silica spheres as an efficient epoxidation catalyst for alkenes. Journal of Saudi Chemical Society. 2019. Vol. 23, no. 8, pp.1157-1167.
https://search.emarefa.net/detail/BIM-1443240
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 1166-1167
Record ID
BIM-1443240